<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="./animate.css">
</head>
<body>
        <div id="skyscrapper">
            <!-- .box#box$*3       -->
            <div class="box" id="box_a"></div>
            <div class="box" id="box_b"></div>
            <div class="box" id="box_c"></div>
            <div class="box" id="box_d"></div>
        </div>
        <script src="gasp.min.js"></script>
        <script src="animate.js"></script>
        <script>
                // 第四个元素 跟第二个元素一样动
                //box.html有四个  a.html没有
                var skyObj = {
                    leftAnimated: ['#box_a','#box_c'],
                    RightAnimated: ['#box_b','#box_d']
                }
                new Animation(skyObj)
        </script>
</body>
</html>